[Bug bootstrap/87146] ubsan bootstrap with non-gcc compiler fails

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87146

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Target|                            |x86_64-*-*, i?86-*-*

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
There is nothing special about a non-GCC host compiler bootstrap.  Does clang
default to optimizing?  If so try bootstrapping with STAGE1_CFLAGS="-O0"